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介绍陕化集团氮肥和磷复肥装置的生产概况,阐述围绕磷复肥装置而采取的联产技术,主要包括从氮肥装置引液氨专线供给磷铵生产、用氮肥装置发电余热蒸汽浓缩湿法磷酸、用BDO(1,4-丁二醇)装置废硫酸调整磷酸二铵产品总养分、在建大氮肥项目所回收的硫酸用于生产磷酸铵产品,以及用尿素成品及其落地肥联产NPK复合肥等5项改造技术。并分析评价其运行效果和效益。
This paper introduces the production situation of nitrogenous fertilizer and compound fertilizer plant in Shaanxi Petrochemical Group, and expounds the co-production technology which is adopted around the compound fertilizer plant, mainly including the production of ammonium phosphate from the nitrogen leaking plant and the production of residual heat by the nitrogenous fertilizer plant. Phosphoric acid, using BDO (1,4-butanediol) plant waste sulfuric acid to adjust the total nutrient content of diammonium phosphate, nitrogen recovery project in the construction of large-scale recovery of ammonium sulfate for the production of ammonium phosphate products, NPK fertilizer and other five transformation technologies. And analyze and evaluate its operation effect and benefit.